RU2556225C1 - Preparation for contactless transport washing - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to field of chemistry, namely to technical preparation with compositions based on cationic and non-ionogenic SAS for contactless transport washing and similar in properties metal surfaces. Preparation consists of the following components with their given ratio (counted per pure substances and with account of neutralisation reactions that take place), wt %: alkali metal hydroxide 2-6, salt of oxyethylenediphosphonic acid 2-10, salt of ethylenediaminotetraacetic acid 0.5-7, sodium citrate 0-6, sodium silicate 0-3, hydrotropic agent 0-6, amine oxide of general formula R¹NOR²R³, where R¹ is alkyl radical. C_nH_2n+1 with n from 6 to 18, R², R³ are alkyl radicals C_nH_2n+1 with n from 1 to 3 - 1-5, non-ionogenic polyethoxylated SAS 5-15, cationic surfactants of general formula R⁴N⁺R⁵R⁶CH³ with counterions Cl^-, CH₃SO₄ ^- or C₂H₅SO₄ ^-, where R⁴ is alkyl hydrocarbon saturated or unsaturated substituent with quantity of carbon atoms in chain from 8 to 18, R⁵ is radical of polyethoxylated type (CH₂CH₂O)_kH, where k is from 1 to 16, R⁶ is identical to R⁴ or identical to R⁵ 2-9, low-ethoxylated alcohols of linear or branched structure of general formula C_nH_2n+1(OCH₂CH₂)_mOH with n from 1 to 6 and m from 1 to 5 - 2-15, dye 0,05-0,5, water - the remaining part.

EFFECT: increased quality of purification in case of contactless transport washing due to combination of SAS and complexions and increase of productivity due to acceleration of preparation water solubility.

13 cl, 3 ex

Description

The invention relates to the field of chemistry, namely, to technical means with compositions based on cationic and nonionic surfactants for contactless washing of vehicles and metal surfaces similar in properties.

Known detergent for contactless washing of vehicles containing alkali metal hydroxide, nonionic polyethoxylated surfactants, cationic surfactants based on quaternary ammonium compounds (patent RU 2243255, publ. 27.12.2004).

This tool is closest to the claimed invention in its composition and principle of action.

The disadvantages of the prototype are the low quality of cleaning during contactless washing of vehicles and limited performance due to the slow solubility in water.

The technical result from the use of the invention is to improve the quality of cleaning during contactless washing of vehicles due to the combination of surfactants and complexones and to increase productivity by accelerating the solubility of the agent in water.

The following are general and particular significant features characterizing the causal relationship of the invention with the specified technical result.

The non-contact vehicle wash contains the following ingredients in the following ratio (in terms of pure substances and taking into account the neutralization reactions), wt.%:

alkali metal hydroxide 2-6% hydroxyethylene diphosphonic acid salt 2-10% ethylenediaminetetraacetic acid salt 0.5-7% sodium citrate 0-6% sodium silicate 0-3% hydrotropic agent 0-6% amine oxide of the general formula R ¹ NOR ² R ³ , where R ¹ is alkyl the radical C _n H _{2n + 1} when n is from 6 to 18, R ² , R ³ are alkyl radicals C _n H _{2n + 1} for n from 1 to 3 1-5% nonionic polyethoxylated surfactants 5-15% cationic surfactants of the general formula R ⁴ N ⁺ R ⁵ R ⁶ CH ₃ with counterions Cl ^- , CH ₃ SO ₄ ^- or C ₂ H ₅ SO ₄ ^- , where R ⁴ is a saturated hydrocarbon alkyl or unsaturated substituent with carbon atoms in a chain from 8 to 18, R ⁵ is a radical of a polyethoxylated type (CH ₂ CH ₂ O) _k H, where k is from 1 to 16, R ⁶ is identical to R ⁴ or identical to R ⁵ 2-9% linear or branched low ethoxylated alcohols structures by the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH with n from 1 to 6 and m from 1 to 5 2-15% dye 0.05-0.5% water rest

As the alkali metal hydroxide, sodium hydroxide, or potassium hydroxide, or a mixture of potassium hydroxide and sodium hydroxide in any ratio can be included in the composition. As the salt of ethylenediaminotetraacetic acid, the tetrasodium salt of ethylenediaminotetraacetic acid or the disodium salt of ethylenediaminotetraacetic acid in an equimolar amount can be included in the composition. As a salt of hydroxyethylene diphosphonic acid, a mixture of a tetrasodium salt of hydroxyethylene diphosphonic acid, a trisodium salt of hydroxyethylene diphosphonic acid and a disodium salt of hydroxyethylene diphosphonic acid in an equimolar amount and in any ratio of components can be included in the composition. As a hydrotropic agent, the composition may include an alkyl polyglycoside with a C ₆ -C ₁₂ alkyl chain length or an alkylated β-alanine derivative of the general formula RR′NCH ₂ COONa, where R is an alkyl radical of the type C _n H _{2n + 1} with n from 8 to 18, R ′ = H, CH ₂ COOM ¹ , where M ¹ = H, Na, K or a mixture (in any ratio of components) of an alkylated polyglycoside with a C ₆ -C ₁₂ alkyl chain length and an alkylated β-alanine derivative of the general formula RR ′ NCH ₂ COONa, wherein R - alkyl radical of the type C _n H _{2n + 1} with n between 8 and 18, R '= H, CH ₂ COOM ^1, where M ¹ = H, Na, K. The nonionic polyethoxy ovannogo surfactant in the composition may be included ethoxylated alcohols are linear or branched structure of the general formula C _n H _{2n + 1} (OCH ₂ CH _{2) m} OH with n of 8 to 18 and m from 5 to 14, or a mixture of ethoxylated nonylphenols with different structures with an average the degree of ethoxylation from 6 to 12, or a mixture of ethoxylated alcohols of a linear or branched structure of the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH at n from 8 to 18 and m from 5 to 14 and ethoxylated nonylphenols of various structures with an average degree of ethoxylation from 6 to 12.

The use of cationic surfactants allows you to remove even the so-called "traffic film" (traffic film) - a thin layer of contaminants of various nature directly on the surface of the car’s paintwork. Thus, this technical solution allows for contactless washing of high quality and with minimal time costs in conditions of serious pollution in the autumn-winter period.

The invention includes alkali metal hydroxides, complexing agents, cationic surfactants, nonionic surfactants of various nature, low ethoxylated alcohols, hydrotropes. All of these components are essential for obtaining high-quality foam, high solubilizing ability, wetting and, as a result, excellent detergency.

Thus, the presence of salts of hydroxyethylenediphosphonic acid (HEDPA) and salts of ethylenediaminetetraacetic acid (EDTA) play a key role in the binding of hardness salts (Ca ²⁺ , Mg ²⁺ , Zn ²⁺ , Fe ³⁺ , Ni ³⁺ , etc.). Moreover, the HEDPA salts work to a greater extent on the binding of trivalent cations, and the EDTA salts are divalent. Also, EDTA salts prevent the formation of by-products of OEDP polymer products with divalent metal salts, which avoids precipitation during product dilution and further storage of the solution for several days. Sodium citrate and sodium silicate perform a similar function and can give a synergistic effect with other complexones.

A combination of linear or branched low-ethoxylated alcohols of the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH (at n from 1 to 6 and m from 1 to 5), amine oxides of the general formula R ¹ NOR ² R ³ and ethoxylated alcohols of linear or branched structure of the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH (at n from 8 to 18 and m from 5 to 14) allows to achieve very high characteristics in foaming and in washing properties.

Alkylpolyglycosides or alkylated derivatives of β-alanine of the general formula RR′NCH ₂ COONa are good hydrotropes and can seriously alter the colloidal properties of the products, namely, to increase the solubility of hydrophobic components in water.

Cationic surfactants make it possible to obtain a foam with “sticky” properties, which gives extreme surface retention and good wettability.

Comparison of the claimed technical solution with the prior art known from the scientific, technical and patent documentation as of the priority date in the main and related sections did not reveal a tool that has features that are identical to all the features contained in the claims proposed by the applicant, including the purpose of the application. Those. the set of essential features of the claimed solution was not previously known and is not identical to any known technical solutions, therefore, it meets the condition of patentability "novelty".

This technical solution is industrially applicable, since its purpose is indicated in the description of the application and the title of the invention, it can be carried out industrially and used to wash vehicles, it is efficient, feasible and reproducible, and the distinguishing features of the device allow to obtain the desired technical result, i.e. are significant.

Therefore, the claimed technical solution meets the condition of patentability "industrial applicability".

In addition, the compliance of the invention with the condition of patentability "industrial applicability" is confirmed by the following examples of implementation of the technical solution.

The analysis of known technical solutions in the art showed that the proposed technical solution does not follow explicitly from the prior art for the specialist, since solutions having features matching the distinguishing features of the invention have not been identified and the influence of the distinctive features on the application materials specified is not confirmed. technical result.

Those. the claimed solution has features that are not found in the known technical solutions, and the use of these features in the claimed combination of essential features makes it possible to obtain a new technical result - improving the quality of cleaning during contactless washing of vehicles and increasing productivity by accelerating the solubility of the agent in water.

Therefore, the proposed technical solution could be obtained only through a creative approach and is not obvious to the average specialist in this field, i.e. has an inventive step in comparison with the existing level of technology.

To achieve optimal results when cleaning from contaminants, it is recommended to use a detergent concentration of 0.5-4%, depending on the degree of contamination of the object.

Dosing of dry components takes place on a platform process balance.

Method of preparation: the calculated amount of water is fed into a container equipped with a mixing device, after which an alkali metal hydroxide is charged into this container in accordance with the recipe. Oxyethylene diphosphonic acid, ethylenediaminetetraacetic acid salt, citric acid are added to the hot solution until complete dissolution in the calculated amount. Then add the corresponding cationic surfactant, nonionic surfactant, alkylpolyglycoside and / or a derivative of β-alanine, a dye and mix for 20-40 minutes until they are completely dissolved. During the entire preparation, the mixer should ensure complete mixing without stagnant zones.

The resulting product can be either one-component or two-component (with separation into two phases). Pouring a two-component product is necessary with constant stirring.

Due to the liquid state of aggregation, the dissolution of the agent in water is accelerated, which increases the productivity of the washing process.

The invention is illustrated by the presented examples in accordance with the regulatory documents of Rospatent.

In the course of the study, foam formation was evaluated according to the most famous Rolle Miles test.

For this, the following foaming parameter was determined: 50 ml of a 3% solution of the test substance in water was foamed by shaking in a 250 ml cylinder with a lid, put on a table. Then after 1 minute the foam height is determined. Foam above 100 mm is a good indicator for subsequent contactless washing.

Example 1

The ratio of components, wt.%, The following:

sodium hydroxide 2% hydroxyethylene diphosphonic acid salt 2% ethylenediaminetetraacetic acid salt 0.5% amine oxide of the general formula R ¹ NOR ² R ³ , where R ¹ is alkyl radical C _n H _{2n + 1} at n 12, R ² , R ³ = Me one% ethoxylated linear or branched alcohols structures of the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH when n is from 8 to 18 and m is from 5 to 14 (mixture) 5% cationic surfactants of the general formula R ⁴ N ⁺ R ⁵ R ⁶ CH ₃ with a counterion Cl ^- , where R ⁴ - alkyl Deputy (type of coconut oil), R ⁵ - radical polyethoxylated type (CΗ ₂ ΟΗ ₂ O) _k Η, where k = 12, R ⁶ is identical to R ⁵ 2% linear or branched low ethoxylated alcohols structures by the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH for n = 2 and m = 1 2% water rest

As a result of the study of detergent in the composition of Example 1, the following values of the parameter of foaming were established — the height of the foam is not less than 102 mm after 1 minute, which indicates a high foaming ability and good retention on a vertical surface, and therefore, increased washing ability.

Example 2

The ratio of components, wt.%, The following:

sodium hydroxide four% hydroxyethylene diphosphonic acid salt 6% ethylenediaminetetraacetic acid salt four% sodium citrate 3% sodium silicate 1.5% alkylated polyglycoside with an alkyl chain length of C ₈ -C ₁₀ 3% amine oxide of the general formula R ¹ NOR ² R ³ , where R ¹ is alkyl radical C _n H _{2n + 1} at n 12, R ² , R ³ = Me 3.5% ethoxylated linear or branched alcohols structures of the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH when n is from 8 to 18 and m is from 5 to 14 (mixture) 10% cationic surfactants of the general formula R ⁴ N ⁺ R ⁵ R ⁶ CH ₃ with a counterion Cl ^- , where R ⁴ - alkyl Deputy (type of coconut oil), R ⁵ - radical polyethoxylated type (CH ₂ CH ₂ O) _k H, where k = 12, R ⁶ is identical to R ⁵ 6% linear or branched low ethoxylated alcohols structures by the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH for n = 2 and m = 1 7% water rest

As a result of the study of detergent in the composition of example 2, the following values of the parameter of foaming were established - the height of the foam is not less than 135 mm after 1 minute, i.e. the composition of example 2 on foaming corresponds to the recommendations on the use of detergents for washing vehicles, which indicates a high foaming ability and good retention on a vertical surface, and therefore, increased washing ability.

Example 3

The ratio of components, wt.%, The following:

sodium hydroxide 6% hydroxyethylene diphosphonic acid salt 10% ethylenediaminetetraacetic acid salt 7% sodium citrate 6% sodium silicate 3% alkylated polyglycoside with an alkyl chain length of C ₈ -C ₁₀ 6% amine oxide of the general formula R ¹ NOR ² R ³ , where R ¹ is alkyl radical C _n H _{2n + 1} at n 12, R ² , R ³ = Me 5% ethoxylated linear or branched alcohols structures of the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH when n is from 8 to 18 and m is from 5 to 14 (mixture) fifteen% cationic surfactants of the general formula R ⁴ N ⁺ R ⁵ R ⁶ CH ₃ with a counterion Cl ^- , where R ⁴ - alkyl Deputy (type of coconut oil), R ⁵ - radical polyethoxylated type (CH ₂ CH ₂ O) _k H, where k = 12, R ⁶ is identical to R ⁵ 9% linear or branched low ethoxylated alcohols structures by the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH for n = 2 and m = 1 fifteen% water rest

As a result of the study of detergent in the composition of example 3, the following values of the parameter of foaming were established - the height of the foam is not less than 160 mm after 1 minute, which indicates a high foaming ability and good retention on a vertical surface, and therefore, increased washing ability.

The use of means for non-contact washing of vehicles allows to improve the quality of cleaning during non-contact washing of vehicles due to the combination of surfactants and complexones, and also increases the degree of retention of the composition on a vertical surface and the productivity of the washing process by accelerating the solubility of the agent in water.

Claims (13)

1. Means for contactless washing of vehicles containing alkali metal hydroxide, nonionic polyethoxylated surfactants, cationic surfactants based on Quaternary ammonium compounds, characterized in that it contains cationic surfactants of the General formula R ⁴ N ⁺ R ⁵ R ⁶ CH ₃ with counterions Cl ^- , CH ₃ SO ₄ ^- or C ₂ H ₅ SO ₄ ^- , where R ⁴ is an alkyl hydrocarbon saturated or unsaturated substituent with the number of carbon atoms in the chain from 8 to 18, R ⁵ is a radical of the polyethoxylated type (CH ₂ CH ₂ O) _k H, where k is from 1 to 16, R ⁶ is identical to R ⁴ or identical en R ⁵ , sodium citrate, sodium silicate, salt of hydroxyethylene diphosphonic acid, salt of ethylenediaminetetraacetic acid, hydrotropic agent, amine oxide of the general formula R ¹ NOR ² R ³ , where R ¹ is an alkyl radical C _n H _{2n + 1} , with n from 6 to 18, R ^2, R ³ - alkyl radicals C _n H _{2n + 1} with n from 1 to 3, nizkoetoksilirovannye alcohols are linear or branched structure C _n H _2n general formula _{+ 1} (OCH ₂ CH _{2) m} OH with n from 1 to 6 and m from 1 to 5, with the following ratio of components (in terms of pure substances and taking into account the passage of neutralization reactions), wt.%:
alkali metal hydroxide 2-6% hydroxyethylene diphosphonic acid salt 2-10% ethylenediaminetetraacetic acid salt 0.5-7% sodium citrate 0-6% sodium silicate 0-3% hydrotropic agent 0-6% amine oxide of the general formula R ¹ NOR ² R ³ , where R ¹ is alkyl the radical C _n H _{2n + 1} when n is from 6 to 18, R ² , R ³ are alkyl radicals C _n H _{2n + 1} for n from 1 to 3 1-5% nonionic polyethoxylated surfactants 5-15% cationic surfactants of the general formula R ⁴ N ⁺ R ⁵ R ⁶ CH ₃ with counterions Cl ^- , CH ₃ SO ₄ ^- or C ₂ H ₅ SO ₄ ^- , where R ⁴ is a saturated hydrocarbon alkyl or unsaturated substituent with carbon atoms in a chain from 8 to 18, R ⁵ is a radical of a polyethoxylated type (CH ₂ CH ₂ O) _k H, where k is from 1 to 16, R ⁶ is identical to R ⁴ or identical to R ⁵ 2-9% linear or branched low ethoxylated alcohols structures of the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH with n from 1 to 6 and m from 1 to 5 2-15% dye 0.05-0.5% water rest 2. The detergent according to claim 1, characterized in that sodium hydroxide is included in the composition as an alkali metal hydroxide. 3. The detergent according to claim 1, characterized in that potassium hydroxide is included in the composition as an alkali metal hydroxide. 4. The detergent according to claim 1, characterized in that the mixture of potassium hydroxide and sodium hydroxide in any ratio is included in the composition as an alkali metal hydroxide. 5. The detergent according to claim 1, characterized in that the tetrasodium salt of ethylenediaminetetraacetic acid in an equimolar amount is included in the composition as the salt of ethylenediaminotetraacetic acid. 6. The detergent according to claim 1, characterized in that the disodium salt of ethylenediaminetetraacetic acid in an equimolar amount is included in the composition as a salt of ethylenediaminotetraacetic acid 7. The detergent according to claim 1, characterized in that a mixture of the tetrasodium salt of hydroxyethylene diphosphonic acid, the trisodium salt of hydroxyethylene diphosphonic acid and the disodium salt of hydroxyethylene diphosphonic acid in an equimolar amount and in any ratio of components is included in the composition. 8. The detergent according to claim 1, characterized in that an alkyl polyglycoside with a C ₆ -C ₁₂ alkyl chain length is included as a hydrotropic agent. 9. The detergent according to claim 1, characterized in that the alkylated β-alanine derivative of the general formula RR′NCH ₂ COONa is included in the composition as a hydrotropic agent, where R is an alkyl radical of the type C _n H _{2n + 1} with n from 8 to 18, R ′ = H, CH ₂ COOM ¹ , where M ¹ = H, Na, K. 10. A detergent according to claim 1, characterized in that the mixture (in any ratio of components) of an alkylated polyglycoside with a C ₆ -C ₁₂ alkyl chain and an alkylated β-alanine derivative of the general formula RR′NCH _{2 is} included in the composition as a hydrotropic agent COONa, where R is an alkyl radical of the type C _n H _{2n + 1} with n from 8 to 18, R ′ = H, CH ₂ COOM ¹ , where M ¹ = H, Na, K. 11. A detergent according to claim 1, characterized in that ethoxylated alcohols of a linear or branched structure of the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH with n from 8 to 18 are included as nonionic polyethoxylated surfactants m from 5 to 14. 12. The detergent according to claim 1, characterized in that as a nonionic polyethoxylated surfactant, a mixture of ethoxylated nonylphenols of various structures with an average degree of ethoxylation from 6 to 12 is included in the composition. 13. A detergent according to claim 1, characterized in that the mixture of ethoxylated alcohols of a linear or branched structure of the general formula C _n H _{2n + 1} (OCH ₂ CH ₂ ) _m OH at n from 8 to 18 is included as a nonionic polyethoxylated surfactant and m from 5 to 14 and ethoxylated nonylphenols of various structures with an average degree of ethoxylation from 6 to 12.